A day after five coaches of the Diva-Sawantwadi train, packed with vacationers from Mumbai, derailed, killing 22 passengers, railway officials suspect the mishap may have taken place because the track at the spot was not welded together properly.

On Monday, commissioner of railway safety (CRS) Chetan Bakshi, who is conducting an inquiry, said he would hold a public hearing on Thursday to record evidence. He will also record the accounts of railway employees.

Around 9.25am on Sunday, the train had derailed outside Bhise tunnel near Nidi station, between Nagothane and Roha on the Konkan route. Traffic on the route was restored on Monday, 20 hours after the accident.

Satish Bagal, resident deputy collector, Raigad, said as per the updated figures, 22 people have lost their lives and 176 were injured, of whom 50 are being treated at various hospitals.